Velocity Field around Large Cylindrical Structures

Abstract

This paper aims to discuss the velocity field around large cylindrical structures under wave action, based on the laboratory experiments and numerical calculation. The wave-induced currents around large cylinders are revealed to direct offshoreward through the whole depth except near bottom and above the wave trough. When the diffraction parameter D/L (D is the diameter of a cylinder, L is the wavelength) is large, the wave height and velocity change complicatedly in space.